987987

素因数分解:

$3^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{47}}^1$

素因数の和:88

約数の個数: 48

約数和(自身を含む): 1838592

約数和(自身を除く): 850605

約数列:

[1, 3, 7, 11, 13, 21, 33, 39, 47, 49, 77, 91, 141, 143, 147, 231, 273, 329, 429, 517, 539, 611, 637, 987, 1001, 1551, 1617, 1833, 1911, 2303, 3003, 3619, 4277, 6721, 6909, 7007, 10857, 12831, 20163, 21021, 25333, 29939, 47047, 75999, 89817, 141141, 329329, 987987]

約数ペア:

[(1, 987987), (3, 329329), (7, 141141), (11, 89817), (13, 75999), (21, 47047), (33, 29939), (39, 25333), (47, 21021), (49, 20163), (77, 12831), (91, 10857), (141, 7007), (143, 6909), (147, 6721), (231, 4277), (273, 3619), (329, 3003), (429, 2303), (517, 1911), (539, 1833), (611, 1617), (637, 1551), (987, 1001)]